Solid‐phase microextraction of phthalate esters by a new coating based on a thermally stable polypyrrole/graphene oxide composite

Abstract

A novel polypyrole/graphene oxide coating was made by the electrochemical polymerization of pyrrole in the presence of sodium dodecyl sulfate and graphene oxide on a platinum wire. The prepared fiber has shown a good thermal stability up to 300°C. The fiber was applied to the direct solid-phase microextraction and gas chromatographic analysis of four phthalate esters. The effect of four parameters on gas chromatography peak area including extraction temperature, extraction time, injection temperature, and ionic strength were investigated. Under the optimized conditions, the detection limits were between 0.042 and 0.26 μg/L. The intraday and interday relative standard deviations obtained at 55 μg/L, using a single fiber, were 8.2-16% and 17.3-25.6%, respectively. The method was successfully applied to the analysis of phthalate esters in two real samples of boiling water in cheap disposable clear plastic drinking cups showing recoveries from 83 to 120%.

Electromembrane‐surrounded solid‐phase microextraction coupled to ion mobility spectrometry for the determination of nonsteroidal anti‐inflammatory drugs: A rapid screening method in complicated matrices

“…As a new class of carbon nanostructures, graphene has received attention because of its extensive surface area and high stability and thus has wide potentials as a sorbent material in SPME . Recently, a composite coating of polypyrole/graphene oxide has been prepared in the presence of SDS as a high thermally stable coating for SPME . The reported composite coating has a porous structure; with high specific surface area and adsorption capacity therefore, so that a high extraction capacity could be achieved .…”

“…Recently, a composite coating of polypyrole/graphene oxide has been prepared in the presence of SDS as a high thermally stable coating for SPME . The reported composite coating has a porous structure; with high specific surface area and adsorption capacity therefore, so that a high extraction capacity could be achieved . Mehdinia and coworkers have prepared a composite of graphene/polyaniline as SPME fiber coating .…”

Development of Novel Solid-Phase Microextraction Fibers

“…And Luo et al [85] prepared another substrateless graphene fiber by hydrothermal reduction of graphene oxide in a capillary mold. In addition, GO, functionalized graphene, and the composites of graphene were also developed into SPME fiber coatings by using the similar methods aforementioned [86][87][88][89][90].…”

Fast vaporization solid phase microextraction and ion mobility spectrometry: A new approach for determination of creatinine in biological fluids

“…The PPy/GO fibers were prepared according to our previous work [28]. For the SPME procedure, water samples spiked with appropriate amounts of the working standard solution and acetic anhydride were put in 1.5 mL glass vials.…”